FR640193A - Perfectionnements apportés aux appareils indicateurs de défauts électriques - Google Patents
Perfectionnements apportés aux appareils indicateurs de défauts électriquesInfo
- Publication number
- FR640193A FR640193A FR640193DA FR640193A FR 640193 A FR640193 A FR 640193A FR 640193D A FR640193D A FR 640193DA FR 640193 A FR640193 A FR 640193A
- Authority
- FR
- France
- Prior art keywords
- improvements made
- electrical fault
- indicating devices
- fault indicating
- electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/28—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
- H02H3/30—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
- H02H3/302—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel involving phase comparison
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US121488A US1797976A (en) | 1926-07-09 | 1926-07-09 | Fault-responsive apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
FR640193A true FR640193A (fr) | 1928-07-07 |
Family
ID=22397034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR640193D Expired FR640193A (fr) | 1926-07-09 | 1927-07-08 | Perfectionnements apportés aux appareils indicateurs de défauts électriques |
Country Status (3)
Country | Link |
---|---|
US (1) | US1797976A (fr) |
DE (1) | DE594403C (fr) |
FR (1) | FR640193A (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439816A (en) * | 1942-09-10 | 1948-04-20 | Raytheon Mfg Co | Method of operating electrical space discharge devices |
NL78602C (fr) * | 1943-10-21 | 1955-06-22 | ||
US3205486A (en) * | 1959-11-02 | 1965-09-07 | Paul King Company | Digital annunciator system |
-
1926
- 1926-07-09 US US121488A patent/US1797976A/en not_active Expired - Lifetime
-
1927
- 1927-07-08 FR FR640193D patent/FR640193A/fr not_active Expired
- 1927-07-10 DE DEA51414D patent/DE594403C/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE594403C (de) | 1934-03-17 |
US1797976A (en) | 1931-03-24 |
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